TL;DR: Regurgitation is a passive process that may occur if a dog eats too fast, but repeated episodes or accompanying respiratory issues require a prompt veterinary exam.
How can I tell the difference between my dog regurgitating and vomiting?
- Regurgitation is a passive process where food is ejected from the esophagus before it ever reaches the stomach.
- It typically happens without the forceful abdominal contractions associated with true vomiting.
- The expelled food often looks exactly as it did in the bowl since it has not been digested.
How urgent is it if my dog is regurgitating undigested food?
- The urgency level for this condition is generally considered Medium.
- If it happens once and your dog is acting normal, they may have simply eaten too fast.
- A prompt veterinary exam is required if it happens repeatedly or is accompanied by coughing, difficulty breathing, or weight loss.
- A vet needs to rule out serious underlying conditions such as megaesophagus or an esophageal obstruction.
Why should I take a photo of what my dog brought up for the vet?
- Providing a photo is incredibly helpful for your veterinary team to distinguish between gastric and esophageal issues.
- Vets look for specific visual cues, such as a cylindrical shape versus liquid and the presence or absence of yellow bile.
- This visual evidence allows for more accurate triage and helps determine how quickly your pet needs to be seen.
Clinical Context (Merck Veterinary Manual)
Vomiting of undigested food immediately after eating in dogs can be attributed to various causes, including dietary indiscretion or intolerance (ingestion of novel, spoiled, or contaminated foods, or foreign material), drug or toxin ingestion (antibiotics, NSAIDs, corticosteroids, plants, chemicals), systemic illness (pancreatitis, uremic gastropathy, hypoadrenocorticism), endoparasitism (Physaloptera sp), bacterial (Helicobacter-associated disease) or viral infection (canine parvovirus). Acute vomiting is characteristic, and the vomitus may contain bile, food, froth, blood, or evidence of an ingested substance. Most cases are self-limiting and may result from dietary indiscretion, parasitic infection, bacterial or viral gastroenteritis, anxiety, or motion sickness.
Chapter: Gastroenterology, Toxicology, Infectious Disease
Source: The Merck Veterinary Manual, 11th Edition (Page 387)